According to a tweet posted by HTC USA last week, the HTC One’s KitKat update had hit carrier labs for final testing and certification was expected to come this week. Now, ZDNet notes that HTC’s software update status page indeed shows that the HTC One’s KitKat update has reached “certification” status at Verizon Wireless, AT&T, Sprint and T-Mobile. As such, a release should take place in the coming days across the board.